$ad=ereg_replace("COCUK","",$ad);
                                                $ad = ereg_replace("cocuk","***",$ad);
                                                $ad = ereg_replace("çocuk","***",$ad);
                                                $ad = ereg_replace("18","***",$ad);
                                                $ad = ereg_replace("17","***",$ad);
                                                $ad = ereg_replace("16","***",$ad);
                                                $ad = ereg_replace("15","***",$ad);
                                                $ad = ereg_replace("14","***",$ad);
                                                $ad = ereg_replace("13","***",$ad);
                                                $ad = ereg_replace("12","***",$ad);
                                                $ad = ereg_replace("COCUK","***",$ad);
                                                $ad = ereg_replace("ÇOCUK","***",$ad);
                                                $ad = ereg_replace("islam","yasak",$ad);
                                                $ad = ereg_replace("İSLAM","yasak",$ad);
                                                $ad = ereg_replace("ALLAH","yasak",$ad);
                                                $ad = ereg_replace("allah","yasak",$ad);
                                                $ad = ereg_replace("kyz","kız",$ad);
                                                $ad = ereg_replace("kucuk","*****",$ad);
                                                $ad = ereg_replace("kücük","*****",$ad);
                                                $ad = ereg_replace("www","*****",$ad);

bu gibi metin duzenleme kullanın bence daha sağlam tum botlarımda vardır
tum aykırı kelimeleri filitreler